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from CAL.PyCAL import Date start = '2010-01-01' # 回测起始时间 end = '2015-05-05' # 回测结束时间 benchmark = 'HS300' # 策略参考标准 universe = set_universe('HS300') # 证券池,支持股票和基金 capital_base = 1000000 # 起始资金 longest_history = 0 # handle_data 函数中可以使用的历史数据最长窗口长度 refresh_rate = 1 # 调仓频率,即每 refresh_rate 个交易日执行一次 handle_data() 函数 longest_history = 1 def initialize(account): # 初始化虚拟账户状态 account.isBuyPeriod = False account.dayCount = 0 def handle_data(account): # 每个交易日的买入卖出指令 account.dayCount += 1 if account.isBuyPeriod: # 每60个工作日(3个月)调仓 hist = account.get_history(longest_history) endDate = Date.fromDateTime(account.current_date) startDate = endDate - 30 res = DataAPI.NewsSentimentIndexGet(secID=account.universe, field=['secID', 'newsPublishDate', 'sentimentIndex'], beginDate=startDate.strftime('%Y%m%d'),endDate=endDate.strftime('%Y%m%d')) res = res.groupby('secID') # top 10% top10 = res.mean().sort('sentimentIndex', ascending=False).head(int(0.1*len(res))) buyList = list(top10.index) print u"%s 买入 : %s" % (endDate, buyList) # 等权重买入 if len(buyList) != 0: singleCash = account.cash / len(buyList) for stock in buyList: approximationAmount = int(singleCash / hist[stock]['closePrice'][-1]/100.0) * 100 order(stock, approximationAmount) account.isBuyPeriod = False account.dayCount = 0 elif account.dayCount == 59: # 调仓日前一日清空当前仓位 for stock in account.valid_secpos: order_to(stock,0) account.isBuyPeriod = True